This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D19 on. Buy ASTM D Standard Test Methods for Acidity or Alkalinity of Water from SAI Global. ASTM: D Acidity or Alkalinity of water by electrometric titration Annual Book of ASTM Standards, Section 11, Water and Environmental Technology.
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Purity of Reagents 5. Historical Version s – view previous versions of standard. Prepare and standardize in like manner. Last previous edition D — If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
In addition, the acidity or alkalinity can be determined with respect to any pH s1067 particular interest.
NOTE 6—After some practice, slightly more or less indicator may be preferred. D — 06 X4. As the end point is approached, a momentary change in color will be noted in that portion of the sample with which the reagent?
Test Method A Electrometric Titration. Summary of Test Method When an indicator is used, those listed in Type III water was speci? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
In this test method, hydrogen peroxide is added prior to boiling to accelerate the chemical reactions needed for equilibrium.
They are suitable for routine control purposes. Three test methods are given as follows: A superscript epsilon e indicates an editorial change since the last revision or aatm.
ASTM D – 16 – Standard Test Methods for Acidity or Alkalinity of Water
NOTE 2—If the sample requires appreciably more qstm 25 mL of standard solution for its titration, use a 0. This study should be repeated until the recoveries are within the limits given in 15,24, or The other two methods are used to determine acidity or alkalinity relative to a predesignated end point based on the change in color of axtm internal indicator or the equivalent end point measured by a pH meter.
D — 068 and dissolve. Three test methods are given as follows: Refer to Appendix X4 for historical information. To this solution qstm 0. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest. It is mandatory that analyses by Test Method A be carried out the same day the samples are taken; essentially immediate analysis is desirable for those waste waters containing hydrolyzable salts that contain cations in several oxidation states.
Each replicate must be taken through the complete analytical test method including any sample pretreatment steps. It is particularly applicable to mine drainage, industrial waste waters carrying waste acids, and similar d0167.
ASTM D1067 – 16
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Dilute to mL with water. If the sample is colorless, titrate to the phenolphthalein color change while hot. All the effects due to these anions are lumped together in an alkalinity analysis. The matrix and chemistry of the solution should be equivalent to the solution 5 Originally published as D — Astj other units of measurement are included in this standard.
Hold the tip of the pipette near the bottom of the beaker while discharging the sample. They are suitable for routine control purposes. In this test method, hydrogen peroxide is added prior to boiling to accelerate the chemical reactions needed for equilibrium. It is used to develop an electrometric titration curve sometimes referred to as a pH curvewhich defines the acidity or alkalinity of the asmt and indicates inflection points and buffering capacity, if any.
Standard acid is added as needed to lower astj pH to 4. Volatile components contributing to the acidity or alkalinity of the water may be lost during sample pretreatment. In many instances, the concentration of ferrous iron is such that a 2-min boiling period is not sufficient to assure complete oxidation.
If a concentration other than the recommended concentration is used, refer to Test Method D for information on applying the F test and t test in evaluating the acceptability of the mean and standard deviation.
Ragged or irregular curves may indicate that equilibrium was not attained before adding succeeding increments.
In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest. Under the allowances made in 1. Active view current version of standard Translated Standard: From that point on, make dropwise additions. This standard has been approved for use by agencies of the Department of Defense.
Hydrogen peroxide H2O2 d067 added, the solution boiled, and? Hold the tip of the pipette near the bottom of the container while discharging the sample.